Forc plugin for interacting with a Fuel node.

Initializing the wallet and adding accounts

If you don't have an initialized wallet or any account for your wallet you won't be able to sign transactions.

To create a wallet you can use forc wallet new. It will ask you to choose a password to encrypt your wallet. After the initialization is done you will have your mnemonic phrase.

After you have created a wallet, you can derive a new account by running forc wallet account new. It will ask your password to decrypt the wallet before deriving an account.

Signing transactions using forc-wallet CLI

To submit the transactions created by forc deploy or forc run, you need to sign them first (unless you are using a client without UTXO validation). To sign a transaction you can use forc-wallet CLI. This section is going to walk you through the whole signing process.

By default fuel-core runs without UTXO validation, this allows you to send invalid inputs to emulate different conditions.

If you want to run fuel-core with UTXO validation, you can pass --utxo-validation to fuel-core run.

To install forc-wallet please refer to forc-wallet's github repo.

  1. Construct the transaction by using either forc deploy or forc run. To do so simply run forc deploy or forc run with your desired parameters. For a list of parameters please refer to the forc-deploy or forc-run section of the book. Once you run either command you will be asked the address of the wallet you are going to be signing with. After the address is given the transaction will be generated and you will be given a transaction ID. At this point CLI will actively wait for you to insert the signature.
  2. Take the transaction ID generated in the first step and sign it with forc wallet sign --account <account_index> tx-id <transaction_id>. This will generate a signature.
  3. Take the signature generated in the second step and provide it to forc-deploy (or forc-run). Once the signature is provided, the signed transaction will be submitted.

Other useful commands of forc-wallet

  • You can see a list of existing accounts with accounts command.
forc wallet accounts
  • If you want to retrieve the address for an account by its index you can use account command.
forc wallet account <account_index>

If you want to sign the transaction generated by forc-deploy or forc-run with an account funded by default once you start your local node, you can pass --default-signer to them. Please note that this will only work against your local node.

forc-deploy --default-signer
forc-run --default-signer

By default --default-signer flag would sign your transactions with the following private-key:


Interacting with the testnet

To interact with the latest testnet, use the --testnet flag. When this flag is passed, transactions created by forc-deploy will be sent to the beta-4 testnet.

forc-deploy --testnet

It is also possible to pass the exact node url while using forc-deploy or forc-run which can be done using --node-url flag.

forc-deploy --node-url

Another alternative is the --target option, which provides useful aliases to all targets. For example if you want to deploy to beta-3 you can use:

forc-deploy --target beta-3

Since deploying and running projects on the testnet cost gas, you will need coins to pay for them. You can get some using the testnet faucet.

Deployment Artifacts

forc-deploy saves the details of each deployment in the out/deployments folder within the project's root directory. Below is an example of a deployment artifact:

  "transaction_id": "0xec27bb7a4c8a3b8af98070666cf4e6ea22ca4b9950a0862334a1830520012f5d",
  "salt": "0x9e35d1d5ef5724f29e649a3465033f5397d3ebb973c40a1d76bb35c253f0dec7",
  "network_endpoint": "",
  "chain_id": 0,
  "contract_id": "0x767eeaa7af2621e637f9785552620e175d4422b17d4cf0d76335c38808608a7b",
  "deployment_size": 68,
  "deployed_block_id": "0x915c6f372252be6bc54bd70df6362dae9bf750ba652bf5582d9b31c7023ca6cf"